Sector 1 seems to suggest the identity of the dangerous liquid on SR388 as being Lava instead of Acid, as the volcanic substance can be found in the SR388 replicating environment of the sector. However, this is relatively near Sector 3, the superheated area of the BSL station, leading to the theory that Sector 3's lava may have breached into SRX.

There is another unidentified liquid substance present in the Tourian-like section of SRX (Beta Acid). This seems to be the same substance found in Zebes' original Tourian HQ in the aftermath of its destruction.

This sector, despite being a replication of SR388, contained very few bioforms native to SR388. This can be explained by the near (if not total) destruction of the planet's ecosystem by the X Parasites and possibly Metroids (given the latter's dangerous nature), making Galactic Federation Researchers' task of collecting varied specimens from SR388 a difficult one.

Part of this sector leading up to Neo-Ridley is very similar to Tourian. This makes it similar to Sector Zero on the BOTTLE SHIP, which was also designed to replicate Tourian. Like Sector Zero, the Tourian-like area was probably meant for Metroid propagation. Sector 1 was not known to have a Mother Brain replica, however.

"Sector 1 was designed to recreate the environment on planet SR388, the native habitat of the X Parasite. Since the explosion, however, Parasites have contaminated the Sector's atmospheric stabilisers. One of Samus's first missions is to bring the stabilisers back online."

SECTOR 1 (SRX)

"The atmospheric stabilisers in Sector 1 have been taken over by X Parasites. As a result, the ecosystem is thick with fumes."